Three years of “meticulous” renovations seems to have paid off at this 19th Century Brooklyn Heights home.

The three-story carriage house at 165 Columbia Heights sold for $9.8 million in December, making it the most expensive sale of the month, according to data provided by Property Shark. The $5 million renovation included a third-story addition that added a master bedroom and roof terrace, both of which are hidden from street view to maintain the townhouse’s restored historic brick facade. The sale is considerably higher than November’s biggest price tag in the borough, which was a Park Slope home for $6.2 million.

The top sale in Queens was slightly less expensive than November’s most priciest home. A Long Island City condo in the View Condominiums on Center Boulevard sold for $2.3 million. A two-story home in Astoria topped November’s list when it sold for $2.6 million.